Social gaming has come a long way since your friend asked you to check out her farm on Facebook. Some estimates suggest that over a million developers worldwide are busily adding to the more than 50,000 games and applications already available on Facebook alone. In 1994, the gaming world was taken by storm when Blizzard Entertainment launched World of Warcraft, which not only became their best-selling PC game but ballooned into 11 million active players in just 14 years.